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Apparatus And Method For Reducing Energy Consumption In Monitoring Means Of a Plurality Of Piezoelectric Components

a piezoelectric component and monitoring means technology, applied in piezoelectric/electrostrictive/magnetostrictive devices, piezoelectric/electrostriction/magnetostriction machines, electrical apparatus, etc., can solve the problem of high power consumption, achieve a lot of power consumption, save power, and reduce power consumption.

Active Publication Date: 2013-04-04
AITO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes an apparatus and method for reducing power consumption in monitoring means of multiple piezoelectric components. It achieves this by using dedicated monitoring circuits for each component and a current detecting circuit that automates the process of alerting the controller in case of a high current. The technical effect is energy savings without compromising the monitoring performance of the components.

Problems solved by technology

In machines, devices and systems in which a plurality of piezoelectric components are employed and in which each of the piezoelectric components must be monitored in respective monitoring means, power consumption is high even at times when none of the piezoelectric components is being used since the monitoring is apt to consume power.

Method used

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  • Apparatus And Method For Reducing Energy Consumption In Monitoring Means Of a Plurality Of Piezoelectric Components
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  • Apparatus And Method For Reducing Energy Consumption In Monitoring Means Of a Plurality Of Piezoelectric Components

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Embodiment Construction

[0032]If the electric signals of many piezoelectric components are monitored, then either one monitoring apparatus per piezoelectric component is required, or many piezoelectric elements are connected to one monitoring apparatus through a multiplexer. In the first instance the current consumption increases with the amount of piezoelectric elements because each monitor requires current to operate. In the second instance each piezoelectric component must continuously be polled by selecting it with the multiplexer. The continuous polling requires current to operate. In both cases a lot of electric power is required for the possibly long duration when none of the piezoelectric elements is producing a signal. Also in both cases the power consumption increases with the amount of piezoelectric component elements.

[0033]Accordingly, it is desirable to be able to suspend the operation of the monitoring circuits while there is no activity and to be able to start the operation of the monitoring...

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Abstract

An apparatus for reducing energy consumption in monitoring means of a plurality of piezoelectric components comprises a plurality of piezoelectric components as well as monitoring means for monitoring the status of the piezoelectric components. The monitoring means have two states namely active and inactive. The piezoelectric components are connected in parallel to each other. A current detecting circuit comprises a switch and a resistor that is connected in parallel to the switch. A controller having two states that are active and inactive. The controller is configured to open the switch in response to the controller being in the inactive state and to close the switch in response to the controller being in the active state. The closing of the switch triggers a state change in the monitoring means from their inactive state to their active state.

Description

FIELD OF THE INVENTION [0001]The invention relates to sensor technology, and in particular sensors in which piezoelectric components are employed.TECHNICAL BACKGROUND [0002]In machines, devices and systems in which a plurality of piezoelectric components are employed and in which each of the piezoelectric components must be monitored in respective monitoring means, power consumption is high even at times when none of the piezoelectric components is being used since the monitoring is apt to consume power.SUMMARY OF THE INVENTION[0003]It is the objective of the present invention to reduce power consumption in monitoring means of a plurality of piezoelectric components, at times when none of the piezoelectric components is active.[0004]This objective can be achieved by use of an apparatus according to independent claim 1, and by use of the method according to independent claim 8.[0005]The dependent claims describe advantageous embodiments of the apparatus.[0006]The apparatus for reduci...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H01L41/113
CPCH01L41/113H01L41/042H10N30/802H10N30/30
Inventor RONNING, KASPERTANHUA, SAKARILAITINEN, PAULIVAN DALEN, HARRY
Owner AITO
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